This converter changes power levels expressed in dBm to voltage levels in dBµV for a given impedance. It’s useful when comparing signal strength or voltage levels across different RF systems.
Formula
dBµV = dBm + 90 + 20 * log10( √Z₀ )
Formula Explanation
- dBm represents the signal power relative to 1 milliwatt.
- Z₀ is the system’s impedance, typically 50 or 75 ohms.
- The conversion accounts for both the impedance and reference voltage relationship.
Example
Input: dBm = -10, Z₀ = 50 Ω
Result: dBµV ≈ 67.0
Who uses it
Handy for RF and broadcast engineers analyzing receiver input levels or signal transmission quality.